You are correct. Liabilty of the pilot whose model hit the injured party was contested by his homeowners and the AMA based on the assumption of risk that we take when we go out to the flight line. Injured party was found at fault and denied compensation for his injuries, not for breaking any rules, but for having assumed the risk of participating in the model flying activity. Incident occurred at Sepulveda Basin ca 2004-5 for anyone that wants to search further details.